Thursday, 22 October 2020

Yamaha XT125X XT125R 125 blog valve clearance adjustment tappets



Yamaha XT 125 for sale on Ebay UK


Yamaha XT 125 parts for sale on Ebay UK  



Just done a tappets adjustment on an XT125r engine i have removed , ill be fitting the engine soon so ill take some photos of this as i go along .


this ids a very easy job with engine out or in .

make sure you change the o-rings you might get away with it but more often than not no and oil will leak
especially around the cam sprocket cover and drip onto exhaust causing excess smoke .




Yamaha xt125r blog valve clearance tappet
                            remove inspection covers ( 24mm)
Yamaha xt125r blog valve clearance

Yamaha xt125r blog valve clearance

Yamaha xt125r blog valve clearance

Yamaha xt125r blog valve clearance

Yamaha xt125r blog valve clearance

change all O-rings 

Yamaha xt125r blog valve clearance
                 remove plastic inspection covers use a good fitting tool to                                         avoid damage to them .
Yamaha xt125r blog valve clearance
                             remove camshaft sprocket cover
Yamaha xt125r blog valve clearance
                             change this O-ring otherwise this leaks
                                       directly onto exhaust
Yamaha xt125r blog valve clearance

Yamaha xt125r blog valve clearance


Yamaha xt125r blog valve clearance

Yamaha xt125r blog valve clearance

Yamaha xt125r blog valve clearance
             turn engine over anti clockwise with crank nut ( 17mm)
Yamaha xt125r blog valve clearance
       make sure piston is at top dead centre and marks are aligned on                 the sprocket ( white marks ) i have painted them white but                                  manufacturer markings are easy to see
Yamaha xt125r blog valve clearance 

make sure lower marks are aligned buy viewing in inspection window

Yamaha xt125r blog valve clearance

then make sure you have free play in both rocker arm 
to ensure you are a TDC on compression stroke (valves closed )

Yamaha xt125r blog valve clearance

Yamaha xt125r blog valve clearance
                      check clearance gap is with above specs
Yamaha xt125r blog valve clearance
                                      adjust where necessary
Yamaha xt125r blog valve clearance

Yamaha xt125r blog valve clearance

Yamaha xt125r blog valve clearance

easy now just check every thing is tightened to specs and turn engine over a couple of times make sure things go smooth and fit inspection covers changing o-rings .


                                         

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